A. Directly proportional to pressure
B. Inversely proportional to pressure
C. Unity at all pressures
D. None of these
Related Mcqs:
- The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law)____________________?
A. V1/V2
B. V2/V1
C. V1 – V2
D. V1.V2 - Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ______________ with the increase of reduced temperature?
A. Decreases
B. Increases
C. Remains constant
D. Decreases logarithmically - For an ideal solution, the value of activity co-efficient is______________________?
A. 0
B. 1
C. 1 - What is the value of ln y (where y = activity co-efficient) for ideal gases ?
A. Zero
B. Unity
C. Infinity
D. Negative - Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the___________________?
A. Nature of the liquid
B. Nature of the gas
C. Temperature of the liquid
D. Total pressure - The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour________________?
A. Measures the elevation in boiling point
B. Is not dependent on the temperature
C. Is a function of the liquid phase composition
D. Measures the depression in freezing point - What is the value of Joule-Thomson co-efficient for an ideal gas ?
A. +ve
B. -ve
C. 0
D. ∞ - The activity of an ideal gas is numerically ____________ its pressure?
A. More than
B. Less than
C. Equal to
D. Data insufficient, can’t be predicted - The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be________________?
A. 2M
B. M/2
C. M
D. M/4 - The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is_________________?
A. R loge 4
B. R log10 4
C. Cv log10 4
D. Cv loge 4
